One More Integration By Parts Problem

In number 5 in the picture I've posted, I'm having trouble solving it because it seems as if there's only one multiple with an x involved, and if I use dx in the other term it still leaves leftover terms. Could someone help me out or get me started with this problem?

As of right now I am using 37arctandx as u and x^-1 as dv, but I don't know how to take the derivative of 37arctanx, I know the derivative of arctanx is 1/1+x^2 but I don't know where the 37 ad the dx come into play, could someone please help